A degree theory for a class of perturbed Fredholm maps
We define a notion of degree for a class of perturbations of nonlinear Fredholm maps of index zero between infinite-dimensional real Banach spaces. Our notion extends the degree introduced by Nussbaum for locally α-contractive perturbations of the identity, as well as the recent degree for locall...
| Published in: | Fixed Point Theory and Applications |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2005-06-01
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| Online Access: | http://dx.doi.org/10.1155/FPTA.2005.185 |